Owner`s Manual - Link Manufacturing
Contents
1. AIRLINE 5 AIR SUPPLY TEE HEIGHT CONTROL VALVE SOLENOID VALVE X 22 x lt lt lt AIRLINE 1 AIRLINES 3 amp 4 AIRLINE 1 CAUTION All wiring should routed and secured neatly to avoid any functional visual issues Under hood and under body wire routings should be clear of sharp edges 3 4 inches minimum and direct sources of heat 4 inches minimum Wiring located in the passenger compartment should be routed away from high temperature areas over the muffler Wiring should not be routed through wheel well areas where it may be dam aged by tire or road debris and it should not be routed over the exhaust system Wiring should not contact the brake lines or fuel lines Disconnect the battery cables before servic ing any electrical components See GM Documents 173237 and 173165 Refer to the GMT560 Best Practices Manual for more information on tying into electrical components 1 Refer to AIR CONTROL SYSTEM INSTALLATION INSTRUCTIONS for further details on electrical system installation and parts list 13 9 FINAL INSPECTION amp OPERATION Recheck all fasteners for specified torque Double check all electrical connections and wire routings Remove all jacks and air system up by either using the fill valve on the air tank or by starting the vehicle and switching the compressor switch to ON Note the maximum allowable pressure in the air tank is 120 psi It is2. inches Air springs will inflate when the switch is returned to the OFF position WARNING Do not drive the vehicle while the Dump Switch is on and the air springs are deflated 14 JOUNCE BUMPER CONTACT WHEN AT DESIGN HEIGHT AIRLINE 2 AIRLINE 1 ADJUSTABLE VALVE LINKAGE VALVE ALIGNMENT INDICATOR ROTATED INLINE WITH EXHAUST PORT DRIVER SIDE VALVE 7 70 INCHES DESIGN HEIGHT 10 SERVICE amp MAINTENANCE The UltraRide suspension needs no lubrication and little maintenance The following components should be checked at the time the truck is being serviced However immediate corrective action should be taken if a serious malfunction occurs See Exploded Assembly on following page for details Important It is important to release any moisture contained within the air reservoir on a daily basis This can be done by pulling on the cable attached to the drain valve Not releasing the moisture on a regular basis will cause the drain valve to not operate properly and may cause the valve to malfunction Excess moisture in the system can also cause premature failure of other components including the tank itself CAUTION If maintenance or service is to be done on the air system be sure to drain all air from system Serious injury could occur if components are removed while system is full of air INSTALLATION amp MAINTENANCE CHECK LIST Check and document OE rear axle
3. recommended to fill the air tank using the supplied schraeder valve so that the compressors are not taxed too much by running for a long period of time Check for proper operation of the height control valves With one end of the valve linkage discon nected rotate the valve arm down 45 air should exhaust from the air springs Rotating the valve arm up 45 should cause the valve to fill the air springs Measure the Design Height of the air springs The height should be as shown in Figure 9 1 measured at the middle of the air spring adjust the design height see Figures 9 2 9 3 dis connect one end of the valve linkage and adjust accordingly Turn the plastic ball end joint to change the length of the linkage increasing the length will increase the Design Height and vise versa Tighten the lock nuts on the valve linkage when complete See Figure 10 3 Set the de sign height by the following sequence 1 deflate the passenger side air bag by disconnecting the linkage from the arm 2 with the driver side linkage connected measure the design height and adjust accordingly by the methods mentioned above 3 once the design height is set for the driver side repeat the same steps for the passenger side including deflating the driver side air bag Once the design height is set reconnect the linkages Jostle the suspension up and down and then allow it to come back to design height Recheck the initial measurement and adjust if ne
4. u Check for air leaks around fittings CHECK AFTER THE FIRST 1000 MILES u Recheck amp tighten any loose fasteners u Check for any loose or worn components CHECK AFTER EVERY 30 000 MILES u Check arm pivot bushings and lateral control rod bushings for wear replace if worn 21 Guideline Driveline Angles After vehicle build is complete the driveline angles must meet the following rules both at unloaded and fully loaded vehicle attitudes Rule 1 The NET OPERATING ANGLE at any individual joint must be at least 1 2 degree and not to exceed 3 degrees The net operating angle at any individual joint on an F Super Duty F250 F350 F450 or F550 must not exceed 4 degrees The preferred maximum angle is 2 degrees The NET OPERATING ANGLE e at any one joint is the combination of the joint angles in both the side view and the plan top view This NET OPERATING ANGLE e equals 2 2 Plan View side View Angle Angle By example using Figure 1 OPERATING ANGLE at JOINT ea gt 0 5 lt 3 0 lt 4 0 OPERATING ANGLE at JOINT eb 2 gt 0 5 angle x angle b lt 3 0 lt 4 0 OPERATING ANGLE 2 2 gt 0 5 at JOINT C ec angle x angle lt 3 0 or lt 4 0 Fig 1 JOINT A lt CENTER BEARING angle x TRANSMISSION_ dE pie ras ee eo a PLAN VIEW COUPLING H S
5. vehicle wheel alignment prior to installation to insure no precondition already exists record the information for verification Remove the attached body if applicable Remember to disconnect all electrical connections to the body and fuel filler tube before removing the body The installation can also be completed using a lift to raise the vehicle If using a lift chassis body removal may not be necessary but removal of rear wheels will aid in installation Refer to GM Document 812944 and 827666 If not using a lift block the front wheels and apply the emergency brake so the vehicle cannot roll Jack up the rear frame of the truck in order to unload the rear leaf springs or use an overhead hoist Do not lift the wheels off the ground if not using a lift to install the suspension Do not jack on the axle it self Install the suspension in the listed sequence Install one side of the suspension at a time First install the driver side completely then install the passenger side Removal of the rear wheels may aid in installation but it is not necessary Measure amp record the wheelbase and centering dims before beginning installation CENTERING DIM CENTERING DIM 2 ge WHEELBASE DIM 2 2 DRIVER SIDE DISASSEMBLY With weight taken off the rear springs as noted in pre installation checklist remove the rear bolts from the rear leaf spring han
6. well as required or necessary clearance for suspension components axles wheels tires and other vehicle components to ensure a safe and sound installation and operation Installer is responsible for advising the owner of proper use service and maintenance required by the product and for supplying maintenance and other instruction as readily available from Link Mfg INSTALLATION NOTES Need for proper Torque value is indicated by wrench symbol and values will be found in Table 10 1 in Maintenance section of the instructions Failure to maintain proper torque can cause component failure resulting in accident with consequent injury Proper tightening of U Bolt Nuts and Mounting Fasteners are required for proper operation b No drilling of new frame holes is required for installation of the suspension Mounting of the air control system will require some holes being drilled into the frame at the location of your choice a The GM C4500 UltraRide with 11K rear axle and the 13 5K rear axle are shown throughout these installation instructions There is virtually no difference between the suspensions for either axle except on how the Lateral Control Bracket attaches to the axle Both will follow the same sequence and setup as depicted NOTE When completing the installation of the UltraRide on the GM chassis please reference the appropriate sections GM Service Manual for additional requirements PRE INSTALLATIONCHECKLIST Check the
7. DRIVELINE ANGLE MEASUREMENT Driveline angle measurements should be made with the vehicle supported by the tires and resting level surface Avoid hoisting a vehicle by the frame since this will distort the chassis enough to make any measurements inaccurate MATCH MOUNTING DRIVESHAFTS TO THE REAR AXLE Runout is measured on OEM rear axle input shafts and the maximum measurement is marked with a yellow dot on the yoke or pilot bearing flange The OEM driveshafts are also marked with a yellow dot on the light side When the parts are assembled the marks are aligned to aid the overall system balance Vehicle modifiers should look for these dots and maintain this match when the drivetrain is reassembled after modification Remanufactured or modified driveshafts should also have their light sides matched to the yellow dot DRIVELINE VIBRATION DAMPERS Driveline vibration dampers are sometimes added to driveshafts or axles to reduce noise vibration and harshness NVH If the chassis has these devices when it is received they should be retained on the modified chassis USE OF DOUBLE CARDAN UNIVERSAL JOINTS FOR GREATER DRIVE ANGLES In general the use of these joints can allow increased drive angles up to as much as 8 degrees However when used at the rear of a coupling shaft a double cardan universal joint will prevent cancellation from occurring at the forward end of the shaft Therefore the single cardan joint must still be maintained
8. HAFT TOP VIEW NTE JOINT C DRIVESHAFT SIDE VIEW angle c 22 Guideline Driveline Angles Continued Rule 2 The combination of NET OPERATING ANGLES throughout the whole driveline must cancel It is preferred that the NET OPERATING ANGLES at either end of a shaft be within 1 degree of each other However at a minimum the following formulas must be satisfied for sufficient cancellation to occur For a 1 shaft driveline 2 joint lt 3 0 lt 4 0 For a 2 shaft driveline 3 joint as exampled in Figure 1 lt 3 0 lt 4 0 For a 3 shaft driveline 4 joint lt 3 0 or lt 4 0 Rule 3 The center bearing mounting bracket surrounding the rubber insulator must be 90 3 degrees to the center bearing In other words no more than 3 degrees of mis alignment can be absorbed by the rubber surrounding the center bearing See Figure 2 Fig 2 No more than 3 degrees of mis alignment allowed A Ensure that u joints are in line to within 2 degrees B Ensure matching alignment arrows between slip yoke and tube shaft 27 SS Observe alignment arrows stamped parts If there alignments marks then them before disassembly to ensure proper phasing alignment shatt and GUIDELINE DRIVELINE COMPONENT PHASING 23 MINIMUM UNIVERSAL JOINT OPERATING ANGLE A slight angle is required to prevent universal j
9. LANGE BOLTS and 4 1 2 UNC TOP LOCK FLANGE NUTS Bracket will have 2 possible mounting locations depending on cross member fuel tank location Use the location shown by the 7 78 dimension shown in Fig 3 5 Orient the bolts so the bolts point outward from the center of the vehicle See Table 10 1 for appropriate Torque Install new U BOLTS provided with kit around the trailing arm using the OE upper leaf spring assembly plate and lower stabilizer bar plate Tighten gradually in a crisscross pattern See Table 10 1 for appropriate Torque AFTER BOTH SIDES HAVE BEEN INSTALLED Sections 4 5 6 FINISH THE FOLLOWING STEPS Torque the FRONT HANGER BRACKET See Table 10 1 for appropriate Torque Torque the AXLE LATERAL CONTROL BRACKET to the axle See Table 10 1 for appropriate Torque Make sure when tightening that the lateral control rod connection maintains its transverse orientation See Figure 3 3 Tighten the TRAILING ARM FRONT PIVOT BOLTS after the suspension has been installed and brought to Design Height in Section 9 See Table 10 1 for appropriate Torque V AXLE LATERAL CONTROL BRACKET ON DRIVER SIDE Pp pi lt a 28 WITH NEW U BOLTS UPPER PLATE AND ALL AXLE COMPONENTS 10 Install the new SHOCK ABSORBERS using the same orientation as factory factory hardware Refer to GM Document 830713 See Table 10 1 for appropriate Torque 11 IM
10. Link Mfg Ltd 223 15th St N E Sioux Center IA USA 51250 2120 712 722 4874 Fax 712 722 4876 QUESTIONS CALL CUSTOMER SERVICE 1 800 222 6283 Ottrakide OWNERS MANUAL GM C4500 CS500 DANA MODEL 5135 REAR AXLE MODELS LINK MFG PART NO 8 000080 PROUDLY INSTALLED BY COMPANY INSTALLER SIGNATURE DATE 060227 80000722 INSTALLATIONINSTRUCTIONS INDEX 10 INIRODUCTION 20 DRIVER SIDE DISASSEMBLY 30 DRIVER SIDE ASSEMBLY 4 0 PASSENGER SIDE DISASSEMBLY 5 0 PASSENGER SIDE ASSEMBLY 6 0 LATERAL CONTROL ROD amp STABILIZER BAR 70 AIR CONTROL SYSTEM 90 ELECTRICAL 90 FINAL INSPECTION amp OPERATION 10 0 SERVICE amp MAINTENANCE L INTRODUCTION IMPORTANT It is important that the entire installation instructions be read thoroughly before proceeding with suspension installation WARNING A correct installation must result in the suspension and axle being loaded within the range specified by axle and suspension manufacturers Please check vehicle speci fications and intended usage to insure axle will be within Gross Axle Weight Rating GAWR No al teration of any Suspension component is permitted PRODUCT INSTALLER RESPONSIBILITIES Installer is responsible for installing the product in accordance with Link Mfg specifications and installation instructions Installer is responsible for providing proper vehicle components and attachments as
11. ND RETAIN Sar iti Peale SE OEM FRONT HANGER BRACKET DISCARD BOLTS amp NUTS NEW ONES ARE SUPPLIED a me Gee 3 DRIVER SIDE ASSEMBLY Review Figure 3 4 amp Figure 11 2 to acquaint yourself with the various parts of the UltraRide suspension Loosely fasten the FRONT HANGER to the frame using 6 1 2 x 1 3 4 UNC FLANGE BOLTS and 6 1 2 UNC TOP LOCK FLANGE NUTS supplied with kit See Fig 5 1 5 2 Torque Later Loosely fasten the AXLE LATERAL CONTROL BRACKET onto the axle and axle seat Insert the BOLT SPACER TUBE into the bushing ID of the TRAILING ARM then position the TRAILING ARM onto the top of the axle and AXLE LATERAL CONTROL BRACKET Place the THRUST WASHERS onto the TRAILING ARM Loosely fasten the TRAILING ARM to the FRONT HANGER with the 3 4 X 7 UNC BOLT 2 3 4 WASHERS and 3 4 UNC NUT NOTE Lithium grease may be applied to Thrust Washers to reduce noise potential Note if the TRAILING ARM is contacting the brake lines carefully bend the brake line towards the axle to make clearance at least 1 4 between the brake line and the trailing arm NOTE on the 13 5K axle the AXLE LATERAL CONTROL BRACKET will fasten only to the axle and not under the TRAILING ARM the flat ARM SPACER PLATE will need to be installed under the arm Torque Later See Table 10 1 for appropriate Torque Fasten the UPPER AIR SPRING BRACKET and AIR SPRING to the frame using 4 1 2 X 1 3 4 UNC F
12. PORTANT Route the all brake cables away from the air spring and other moving components It may need to be tied or slightly repositioned in order to accommodate this Front Hanger Height Control Valve Air Spring Frame Mount Thrust Washer amp Bolt Spacer Axle Lateral Control Bracket MAKE SURE LATERAL CONTROL ROD IS SIDE PLATES TO FRONT MOUNT BOLT 4 065 I 21 u O 9 O 4 PASSENGER SIDE DISASSEMBLY 1 Repeat Section 2 for the passenger s side of the truck 5 PASSENGER SIDE ASSEMBLY 1 Repeat Section for the passenger s side of the truck NOTE Install the Trailing Arm Spacer Plate between the trailing arm and axle seat This ensures that both arms are at the same height FRAME MOUNT BRACKET to the inside of the frame using 4 1 2 x 1 3 4 UNC FLANGE BOLTS and 4 1 2 UNC TOP LOCK FLANGE NUTS Reattach the OE jounce bumper bracket at the same time using the new fasteners provided See Table 10 1 for appropriate Torque b Remove the OE jounce bumper bracket from the frame Assemble the LATERAL CONTROL ROD Double check all fasteners for proper torque referred to in Table 10 1 Check all clearance points and all alignments See Figure 5 1 for details Upper Lateral Control Bracket OE Jounce Air Spring Bumper Frame Mount
13. Trailing Arm SN Spacer Plate Air Spring lt i me i gt Thrust Washer SE OA IO U Boli Spacer 6 LATERAL CONTROL ROD amp STABILIZER BAR 1 Once both sides of the air suspension are installed mount the LATERAL CONTROL ROD between the two sides using 2 5 8 X UNF BOLTS and 2 5 8 UNF TOP LOCK NUTS See Table 10 1 for appropriate Torque See Figure 6 1 for assembly details 2 If reusing the OE stabilizer bar Reinstall the stabilizer bar upper linkage bracket to the front hanger mount Use the OE bolts and nuts that were retained NOTE Inspect Lateral Control Rod and Stabilizer Bar for any interference with other components paying close attention to clearance with any flexible components such as brake and fuel lines IF USING OE STABILIZER BAR MOUNT FRAME BRACKET TO SUSPENSION FRONT HANGER AT THIS LOCATION LATERAL CONTROL ROD FRAME BRACKET CN 0 0 gt LATERAL CONTROL ROD AXLE BRACKET 10 7 CONTROL SYSTEMASSEMBLY CAUTION Route all airline away from exhaust moving parts and sharp objects careful not to crimp the edges of the tubing When installing the airline fully insert into fitting and give a slight pull to seat properly and to be sure airline will not pull out Note If your vehicle has a frame body that does not allow the air control system box to be located as shown you will need to determine another location for mounting and drill the necessary holes If installi
14. alignment Q Set Design Height to 7 7 inches u Verify suspension function via dump and re inflation u Check for air leaks and system integrity u Check clearances throughout suspension motion range u Check driveline angle u 4wheel alignment u After installation measure and record wheelbase and centering dimensions N u 16 TORQUE TABLE Table 10 1 LATERAL CONTROL ROD 130 170 FT LBS POST INSTALLATION MEASUREMENTS WHEELBASE DIM CENTERING DIM CENTERING DIM 2 WHEELBASE DIM 2 UltraRide 4500 5500 PARTS LIST ITEM PART DESCRIPTION 11K AXLE 13 5K NUMBER AXLE PRING AIR 2 02 20 1480 1604 2 UNC TOP LOCK FL NUT GR G O amp P 1480 2002 HEX TOP LOCK FLANGE NUT M20 X 2 5 CLASS10 1488 2002 8 SAE HARDENED WASHER 1488 2402 3 4 SAE HARDENED WASHER 1495 0018 U BOLT 5 8 UNF 4 094 X 7 00 BOLT SQUARE 5 8 4 75 X 6 75 BOLT SQUARE 5 8 UNF 5 25 x 8 50 1495 0021 U BOLT M20 X 2 50 79 X 425 1500 0237 LINKAGE VALVE HEIGHT CONTROL 2 88 1500 0303 SNAP BUSHING 250 1506 0016 8 UNF HEX HIGH NUT 2991 0024 BALL 13010062 HEIGHT 800001309 WASHER WEAR 80000135 80000688 AXLE 80000725 CHANNEL MOUNT AXLE 1400 2456 8 4 X 7 UNF HEX CAP SCR GR 8 O a
15. at less than 3 degrees or 4 degees for the F Super Duty series GENERAL COMMENTS It is good practice for any chassis that will have a driveline modification to measure and record the driveline angles in each of the following conditions for later comparison a The chassis as first received from Ford note that the drive angles may not conform exactly to this bulletin in this incomplete condition b The completed vehicle unloaded C The completed vehicle loaded to GVWR with maximum front GAWR d The completed vehicle loaded to GVWR with maximum rear GAWR 24
16. c in controlling the height of the chassis No man ual intervention to control air pressure or ride height is needed during the course of operation u Compressor Switch must be on for the compressors to operate During difficult starting circum stances i e extremely cold weather it is recommended to turn the compressor switch off until the vehi cle is running so it will not draw current from the battery The compressors are controlled by the pressure switch located in the Air Control Box This switch automatically turns the compressors on when the tank pressure falls below 100 psi and turns them off at 120 psi u The Low Pressure Warning Light indicates a severe drop in tank pressure below 60 psi Immediate cor rective action should be taken to determine the cause of air loss Compressor switch should be turned off if Low Pressure Warning Light is on and remains on even after the compressors have run for a normal period of time NOTE The Low Pressure Warning Light could come on briefly when the Dump feature is being used tis important to release any moisture contained within the air tank daily basis This is done by pull ing on the attached release cable for approximately 5 seconds See Air Control Kit Owners Manual for location of this cable Not releasing the moisture on a regular basis will cause the drain valve to not oper ate properly CHECK AT EVERY VEHICLE SERVICE INTERVAL u Check Design Height 4
17. correct position and re secure lever by tightening lever screw See Fig 11 3 amp 11 4 for orientation details B Replace valve Shock Absorber Insufficient damping effect Replace shocks Lateral Control Rod A Loose nuts on lateral control rod bolts A Tighten securely B Worn bushings B Replace lateral control rod 20 GMC C4500 C5500 ULTRARIDE OWNERS GUIDELINES The UltraRide suspension needs no lubrication and little maintenance However immediate cor rective action should be taken if a serious malfunction occurs CAUTION If maintenance or service is to be done on the air system be sure to drain all air from the system Serious injury could occur if components are removed while system is full of air PRODUCT OWNER RESPONSIBILITIES u Owner is solely responsible for pre operation inspection periodic inspections maintenance and use of the product as specified in the particular LINK MFG instructions available by product model except as provided in this warranty and for maintenance of other vehicle components Of particular importance is the re torque of fasteners including axle u bolts torque rod bolts and track rod bolts This re torque must be performed within 90 days of the suspension being put in service Owner is responsible for down time expenses cargo damage and all business costs and losses result ing from a warrantable failure The UltraRide Chassis Air Suspension is fully automati
18. eded Note this procedure to set design height can be done when empty or under light load Move the suspension throughout its entire range of motion by inflating and deflating the air springs to achieve full travel Check for any interferences with the lateral control rod axle shocks exhaust frame brake lines especially on the driver side fuel lines etc Reconnect the valve linkage to the lever Note if contacting the brake lines hand caulk the line to make clearance at least 1 4 between the brake line and the axle brackets IMPORTANT Check all fittings and airlines for air leaks Reinstall the chassis body if applicable IMPORTANT During servicing check tightness of all fasteners and for any air system leaks See Table 10 1 for torque specifications Immediate corrective action should be taken if malfunctions occur 10 After all final checks are complete it is recommended to complete a full four wheel alignment and 11 drive line angle check The pages following the installation instructions describe the proper method for checking driveline angles Note improper driveline angles may have a detrimental effect on ride u joints and transmission If any driveline vibration or out of spec angle measurement curs use factory axle seat shims to modify driveline angle Kneeling Operation Moving the switch ON to Dump will exhaust all air from the air springs and lower the rear of the vehicle approximately 3 4
19. ger bracket Remove the front spring hanger bracket DO NOT re use the fasteners that mount the hanger bracket or the leaf spring itself New fasteners are provided and must be used to achieve proper clamp load on the hanger See Figure 2 1 2 2 2 3 Refer to GM Documents 800862 1202795 CAUTION Be careful that the leaf spring does not spring out of its hanger or off the frame Remove existing U bolts that attach the axle to the leaf spring After this is done axle spring and hanger will be loose Remove only the leaf spring from the axle DO NOT re use existing fasteners such as the U bolts or nuts New fasteners are provided Rear leaf spring hanger bracket can now be removed completely See Figure 2 2 2 3 for details Grind remove 4 rivets that connect the aft of axle cross member to the frame These can be removed by grinding or air chiseling the heads off the factory installed rivets This is where the upper air spring mount will be located See Figure 2 3 for location of these rivets Remove the OEM shock absorbers and retain the mounting fasteners for later use The OEM stabilizer bar may be left on if desired If retained remove the four bolts that connect the upper linkage brackets to the lower flange of the frame These brackets will be reinstalled onto the UltraRide front hanger New fasteners are provided See Figure 2 1 IF USING OE STABILIZER BAR REMOVE BOLTS FROM _ UNDER THE FRAME FLANGE AS SHOWN A
20. mp P 800 0042 LCR 800 0043 LATERAL CONTROL ROD 800 0044 1 800 0045 JBRACKET MOUNT LCR 810 0009 HANGER 810 0010 HANGER 810 0012 AIRSPRING 810 0013 AIRSPRING JJ lt 7 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 UltraRide GM 4500 5500 PARTS LIST 7 GE 219 0 Z gt I lt Zam R PA 2 z OF i DO UltraRide TROUBLE SHOOTING GUIDE COMPONENT POSSIBLE PROBLEM CORRECTIVE ACTION Air leaks Remove fitting and apply fresh joint compound Rein Stall fitting but Do Not Over tighten Do not use Improper height A Adjust valve linkage to maintain proper air spring height B Air leakage B Replace air spring Height Control Valve Air spring s will not inflate when weight is added to Inspect valves to insure drive bearing notch is he chassis located correctly The driver side valve notch on SUPPLY port side of valve passenger side on SUSP port side If not loosen lever screw but Air spring s will not deflate when weight is removed do not remove completely and pull lever loose rom the chassis from drive bearing rotate drive bearing until the drive bearing notch is in the
21. ng on the frame underneath the cab make sure it is mounted as high on the frame as possible to allow for ground clearance below the tank FLANGE BOLTS and 4 5 16 UNF TOPLOCK FLANGE NUTS to fasten the Air Control Box to the frame placing the rubber isolators between the box and frame Do not tighten the fasteners so tight that back of 1 Mount the Air Control Box to the side of the frame in the specified location Use 4 5 16 X 1 3 4 UNF the Air Control Box contacts any bolts protruding from the frame See Table 10 1 for appropriate Torque 2 Route the 6 airlines as shown in Figures 7 1 7 2 8 7 3 2 1 Route AIRLINE 1 from the supply port of the HEIGHT CONTROL VALVE to the lower outlet port of the AIR RESERVOIR SOLENOID 2 2 Route AIRLINE 2 from the top port in the HEIGHT CONTROL VALVE to the elbow in the AIR RESERVOIR SOLENOID 2 3 Route AIRLINE 3 amp 4 from the Run Tee on del port of the HEIGHT CONTROL VALVE to the AIR SPRINGS 3 Place supplied corrugated loom onto all airlines Use supplied cable ties and airline clips to secure airline and to keep it away from all hazardous objects See Figure 7 4 for details TO AIR SPRINGS AIRLINE 3 amp 4 FROM DUMP PORT ON AIR KIT 2 _ AIRLINE 2 5 ADJUSTABLE HEIGHT CONTROL VALVE LINKAGE FROM AIR SUPPLY PORT ON AIR AIRLINE 1 AIR CONTROL AIR CONTROL SCHEMATIC AIRLINE 2 PILOT SUPPLY PORT 3 amp 4 TO AIR SPRINGS
22. oints from brinelling Therefore a minimum operating angle of degree is required MAXIMUM UNIVERSAL JOINT OPERATING ANGLE Universal joint operating angles can be quite high sometimes as high as 12 degrees But to get a vehicle to operate successfully above 3 degrees often requires larger universal joints double cardan or constant velocity joints or restrictions on operating speed A reduction in universal joint life becomes noticeable when they are operated at more than 3 degrees if precautions are not taken That having been stated the F Super Duty series of trucks F250 F350 F450 and F550 can tolerate angles up to 4 degrees However maximum angles of 2 degrees are preferable for all vehicles Two shafts connected with a single cardan joint and turning at a constant speed with no joint angle have no angular acceleration that could cause a vibration When there is an angle between them and the input shaft is turning at a constant speed the driven shaft is forced to continuously accelerate and decelerate twice per revolution creating a vibration If the speed changes are small the vibration is not objectionable The guidelines in this appendix limit driveline angular acceleration to a maximum of 400 radians per second per second This is the requirement for all Ford light trucks SAE specifies 500 Some modified drivelines have been measured at over 11 000 radians per second per second causing driveline failures at very low mileage
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